2 000 2 500 1 500 3 000 1 000 proven performance 3 500 500 4 … · 2021. 8. 19. · – drill rig:...
TRANSCRIPT
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Test results show that Powerbit Underground provides 37 percent more drill metres on average before bit discard than a standard drill bit. The chart shows the location of the test mines used for testing.
Proven performancePowerbit Underground has been put to the test in numerous drill tests. Before launch, we carried out thousands of drillings across the globe in collaboration with selected customers. The tests were made independently and offer strong evidence of the new bit’s superior performance. See for yourself!
ZinkgruvanBA 87
Sweden
ZinkgruvanBA 91
Sweden
B PenonChile
North MineCanada
Fraser MineCanada
Golden GroveAustratia
OrivesiFinland
LaisvallSweden
MeterR 32SR 35 Powerbit
4 500
4 000
3 500
3 000
2 500
2 000
1 500
1 000
500
0
Australia 1 Australia 3 Mexico Canada 1 Canada 2 Macedonia ColombiaMongolia
504
637
439
381
256
218
267
227
257
141114
99
6643
280
404
Drill metersStandard bit avgPowerbit avg
700
600
500
400
300
200
100
0
Lorem ipsumLorem ipsum
257 m
82%longer
service life
17%higher
penetration rate
141
180 m
150
200
100
150
175
75
2.17 m/min
1.85
20%longer
grinding interval
10%longer
service life
37%more drill meters on average
6
7
MexicoSite characteristics The test mine is located in northern Mexico, in a district well-known for mining. The main mineral is zinc followed by lead and copper. The rock offers challenging conditions due to the presence of quartz, pyrite and magnetite.
MethodThe test was conducted in development drilling, both in waste rock and in the ore itself. Ten drillings were made to measure both drilled metres and penetration rate. The results are in comparison with a standard 45 mm bit.
Equipment– Drill rig: Tamrock Axera
– Rock drill: Sandvik HLX5
– Flushing pressure: 2–6 bar at 30–35 liters/min
– Drill bit: Powerbit Underground 45mm
– Buttons: Trubbnos trapezoid-shaped buttons
Results
Penetration rateStandard bit: 1.85 meters/min
Powerbit Underground: 2.17 meters/min
Service lifeStandard bit: 141 meters
Powerbit Underground: 257 meters
The average penetration rate was 17% higher with Powerbit Underground, which has a direct impact on the energy consumption of drilling.
The average service life was 82% longer with Powerbit Underground, which has a direct impact on the cost per metre for the bit.
The average grinding interval was almost 20% longer with Powerbit Underground. The bit proved highly effective on mixed rock, performing well in the igneous formations on site. The high flushing capacity was effective on soft clay pockets.
South KoreaSite characteristics Powerbit Underground was tested at a tunnelling project for a road construction, outside Seoul, South Korea. The test was conducted in excellent collaboration with the customer.
MethodThe test was conducted in igneous formations, which consists of medium to hard rock with pockets of clay. Powerbit Underground was benchmarked against a standard model 39 semi-ballistic bit.
Equipment– Drill rig: Epiroc Rocket Boomer E3
– Rock drill: Epiroc COP 3038 rock drills
– Drill bit: Powerbit Underground 45mm
– Buttons: Trubbnos trapezoid-shaped buttons
– Grinding equipment: Epiroc Grindmatic BQ3
Results
Grinding intervalStandard bit: 150 meters
Powerbit Underground: 180 meters
Service life10% longer
ZinkgruvanBA 87
Sweden
ZinkgruvanBA 91
Sweden
B PenonChile
North MineCanada
Fraser MineCanada
Golden GroveAustratia
OrivesiFinland
LaisvallSweden
MeterR 32SR 35 Powerbit
4 500
4 000
3 500
3 000
2 500
2 000
1 500
1 000
500
0
Australia 1 Australia 3 Mexico Canada 1 Canada 2 Macedonia ColombiaMongolia
504
637
439
381
256
218
267
227
257
141114
99
6643
280
404
Drill metersStandard bit avgPowerbit avg
700
600
500
400
300
200
100
0
Lorem ipsumLorem ipsum
257 m
82%longer
service life
17%higher
penetration rate
141
180 m
150
200
100
150
175
75
2.17 m/min
1.85
20%longer
grinding interval
10%longer
service life
37%more drill meters on average
A closer look at our testsSo how did we test Powerbit Underground? Let’s have a closer look at two of our test sites, specifically. Here we present some crucial test characteristics including typical rock type and equipment used.
ZinkgruvanBA 87
Sweden
ZinkgruvanBA 91
Sweden
B PenonChile
North MineCanada
Fraser MineCanada
Golden GroveAustratia
OrivesiFinland
LaisvallSweden
MeterR 32SR 35 Powerbit
4 500
4 000
3 500
3 000
2 500
2 000
1 500
1 000
500
0
Australia 1 Australia 3 Mexico Canada 1 Canada 2 Macedonia ColombiaMongolia
504
637
439
381
256
218
267
227
257
141114
99
6643
280
404
Drill metersStandard bit avgPowerbit avg
700
600
500
400
300
200
100
0
Lorem ipsumLorem ipsum
257 m
82%longer
service life
17%higher
penetration rate
141
180 m
150
200
100
150
175
75
2.17 m/min
1.85
20%longer
grinding interval
10%longer
service life
37%more drill meters on average
7